@article{GDZPPN002036657,
title = {The fundamental equation of information and its generalizations.},
journal = {Aequationes mathematicae},
volume = {33},
year = {1987},
pages = {150-182},
zbl = {0658.94006},
url = {http://dml.mathdoc.fr/item/GDZPPN002036657}
}
Sander, Wolfgang. The fundamental equation of information and its generalizations.. Aequationes mathematicae, Tome 33 (1987) pp. 150-182. http://gdmltest.u-ga.fr/item/GDZPPN002036657/